* Microchip PIC32 Pin Controller
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Please refer to pinctrl-bindings.txt, ../gpio/gpio.txt, and
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../interrupt-controller/interrupts.txt for generic information regarding
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pin controller, GPIO, and interrupt bindings.
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PIC32 'pin configuration node' is a node of a group of pins which can be
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used for a specific device or function. This node represents configuraions of
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pins, optional function, and optional mux related configuration.
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Required properties for pin controller node:
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- compatible: "microchip,pic32mada-pinctrl"
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- reg: Address range of the pinctrl registers.
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- clocks: Clock specifier (see clock bindings for details)
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Required properties for pin configuration sub-nodes:
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- pins: List of pins to which the configuration applies.
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Optional properties for pin configuration sub-nodes:
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----------------------------------------------------
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- function: Mux function for the specified pins.
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- bias-pull-up: Enable weak pull-up.
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- bias-pull-down: Enable weak pull-down.
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- input-enable: Set the pin as an input.
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- output-low: Set the pin as an output level low.
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- output-high: Set the pin as an output level high.
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- microchip,digital: Enable digital I/O.
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- microchip,analog: Enable analog I/O.
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Example:
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pic32_pinctrl: pinctrl@1f801400{
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "microchip,pic32mzda-pinctrl";
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reg = <0x1f801400 0x400>;
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clocks = <&rootclk PB1CLK>;
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pinctrl_uart2: pinctrl_uart2 {
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uart2-tx {
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pins = "G9";
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function = "U2TX";
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microchip,digital;
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output-low;
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};
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uart2-rx {
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pins = "B0";
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function = "U2RX";
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microchip,digital;
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input-enable;
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};
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};
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};
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uart2: serial@1f822200 {
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compatible = "microchip,pic32mzda-uart";
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reg = <0x1f822200 0x50>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_uart2>;
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};
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